Runway-embedded flash lighting device

ABSTRACT

A runway-embedded flash lighting device includes: a body configured to be embedded in a runway; a ceiling member including a flash emission window, disposed in an upper opening of the body and configured to be exposed to a runway surface when the body is embedded in the runway; a light guide member disposed in the flash emission window; an LED flash light source disposed inside the body and configured to emit a flash toward the light guide member; and a bottom cover member disposed on and covering the lower opening of the body and including on an outer surface thereof on a side opposite to the body, a support portion protruding from the outer surface of the bottom cover member.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a National Stage of International Application No.PCT/JP2019/032556 filed Aug. 21, 2019, claiming priority based onJapanese Patent Application No. 2018-201402 filed Oct. 26, 2018.

TECHNICAL FIELD

The present invention relates to a runway-embedded flash lightingdevice.

BACKGROUND ART

Conventionally, marker lamps for emitting marker light have beenembedded under an airfield runway as a guide sign (for example, seePatent Literature 1). In the marker lamp embedded under an airfieldrunway, a discharge lamp containing xenon is sometimes used as a flashlight source.

CITATION LIST Patent Literature

Patent Literature 1: JP 2000-228103 A

SUMMARY OF INVENTION Technical Problem

However, a flash lighting device using a xenon flash light source isheavy, has a short life, has a low effective luminous intensity, cannotswitch the luminous intensity among high luminous intensity, mediumluminous intensity, and low luminous intensity, and consumes a largeamount of power. In addition, since the runway-embedded flash lightingdevice includes a cable gland or the like at the bottom, when the deviceis taken out for installation or maintenance and placed on the ground,for example, it was necessary to prepare a platform or to invert or tiltthe device. Therefore, the work becomes complicated and there is a riskthat the cable gland or the like is damaged.

With the foregoing in mind, it is an object of the present invention toprovide a new runway-embedded flash lighting device that is light, has along life, has high effective luminous intensity, can switch theluminous intensity, is low in power dissipation, and can be placed onthe ground with its bottom facing down without requiring a platform orthe like.

Solution to Problem

In order to achieve the above object, according to one aspect of thepresent invention there is provided a runway-embedded flash lightingdevice including: a cylindrical body; a ceiling member; a light guidemember; an LED flash light source; and a bottom cover member, whereinthe cylindrical body can be embedded in a runway, the ceiling member isplaced in an upper opening of the cylindrical body in a state of beingable to be exposed to a runway surface when the cylindrical body isembedded in the runway, the ceiling member is provided with a flashemission window, the light guide member is placed in the flash emissionwindow, the LED flash light source is placed inside the cylindrical bodyin a state of capable of emitting flash toward the light guide memberplaced in the flash emission window, the light guide member allows flashemitted from the LED flash light source to be emitted to an outside fromthe flash emission window, the bottom cover member is placed in a stateof capable of closing the lower opening of the cylindrical body, and thebottom cover member is provided with, on an outer surface thereof on aside opposite to the cylindrical body, a support portion protruding fromthe outer surface.

Advantageous Effects of Invention

The runway-embedded flash lighting device of the present invention islight, has a long life, has high effective luminous intensity, canswitch the luminous intensity, is low in power dissipation, and can beplaced on the ground with its bottom facing down without requiring aplatform or the like.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is an exploded perspective view showing the configuration of anexample of the runway-embedded flash lighting device according to thefirst example embodiment.

FIG. 2 is a perspective view from above showing an example of thecylindrical body and ceiling member in the runway-embedded flashlighting device according to the first example embodiment.

FIG. 3 is a perspective view from below showing an example of thecylindrical body and ceiling member in the runway-embedded flashlighting device according to the first example embodiment.

FIG. 4 is a partially enlarged perspective view showing an example ofthe LED flash light source in the runway-embedded flash lighting deviceaccording to the first example embodiment.

FIG. 5 is a cross-sectional view illustrating an example of the LEDflash light source in the runway-embedded flash lighting deviceaccording to the first example embodiment.

FIG. 6 is a perspective view from below showing the runway-embeddedflash lighting device shown in FIG. 1.

FIG. 7 is a schematic perspective view showing the configuration of anexample of the runway according to the second example embodiment.

FIG. 8 is a schematic side view explaining flash emission in therunway-embedded flash lighting device according to the first exampleembodiment.

FIG. 9 is a side view showing an example of the light guide member andLED flash light source inside the runway-embedded flash lighting deviceshown in FIG. 8.

FIGS. 10A and 10B are views showing variations of a support portion inthe runway-embedded flash lighting device according to the first exampleembodiment.

DESCRIPTION OF EMBODIMENTS

Next, example embodiments of the present invention will be describedwith reference to FIGS. 1 to 10. The present invention, however, is notlimited or restricted to the following example embodiments by any means.In FIGS. 1 to 10, identical parts are indicated with identical referencesigns. Regarding the descriptions of the example embodiments, referencecan be made to one another. Furthermore, in the drawings, for ease ofdescription, illustration of the structures of the components may beappropriately simplified, and the size, the ratio, and the like ofcomponents may be schematically shown and different from actual ones.

First Example Embodiment

FIG. 1 is an exploded perspective view showing the configuration of anexample of the runway-embedded flash lighting device according to thepresent example embodiment. As shown in FIG. 1, a runway-embedded flashlighting device 1 includes a cylindrical body 10, a ceiling member 11, alight guide member 12, an LED flash light source 13, and a bottom covermember 16.

The cylindrical body 10 can be embedded in a runway 2 as will bedescribed below with reference to FIG. 7 in the second exampleembodiment. The cylindrical body 10 may be, for example, a circularcylinder as shown in FIG. 1, or may be a cylinder other than a circularcylinder such as an elliptical cylinder or a polygonal cylinder.

The ceiling member 11 is placed in the upper opening of the cylindricalbody 10 in a state of being able to be exposed to the runway surfacewhen the cylindrical body 10 is embedded in the runway 2.

The cylindrical body 10 and the ceiling member 11 may be separatemembers as shown in FIG. 1, or may be integrally molded as an integrallymolded product as shown in FIG. 2. Examples of the integrally moldedproduct include aluminum castings, titanium castings, aluminum alloycastings, and titanium alloy castings. Among them, aluminum castings andtitanium castings are preferable because they are light, and aluminumcastings are particularly preferable because they are inexpensive. Whenthe cylindrical body 10 and the ceiling member 11 are separate members,as in the case of the integrated molding product, the cylindrical body10 and ceiling member 11 may be, for example, aluminum castings,titanium castings, aluminum alloy castings, or titanium alloy castings.

The ceiling member 11 is provided with a flash emission window, and thelight guide member 12 is placed in the flash emission window. Therunway-embedded flash lighting device 1 of the present exampleembodiment may include two or more flash emission windows, and the lightguide member 12 may be placed in each of the flash emission windows, forexample. If two or more light guide members 12 are used, the burden onthe light guide member 12 can be further reduced and damage can beprevented. For example, as shown in FIG. 1, the flash emission windowand the light guide member 12 may be divided into two or more by areinforcing plate member 14 to be described below. The light guidemember 12 may be, for example, a prism lens or the like. The material ofthe prism lens is not particularly limited, and may be, for example,glass or the like.

The ceiling member 11 may have a stepped structure that includes anupper ceiling portion 11 a and a lower ceiling portion 11 b, wherein theupper ceiling portion 11 a is placed on the rear side relative to theemission direction of the flash emission window, and the lower ceilingportion 11 b is placed on the emission direction side of the flashemission window, for example.

The runway-embedded flash lighting device 1 of the present exampleembodiment may further include the reinforcing plate member 14, and thereinforcing plate member 14 may be placed on the outer surface of thelower ceiling portion 11 b in a state of standing upright in thevertical direction of the outer surface of the lower ceiling portion 11b, for example. The ceiling member 11 and the reinforcing plate member14 may be separate members or may be integrally molded as an integrallymolded product, for example. When the ceiling member 11 and thereinforcing plate member 14 are separate members, as in the case of theintegrated molding product, the reinforcing plate member 14 may be, forexample, aluminum castings, titanium castings, aluminum alloy castings,or titanium alloy castings.

The runway-embedded flash lighting device 1 of the present exampleembodiment may further include a fixing member 15, the fixing member 15may be placed on the outer peripheral side of the ceiling member 11, andthe fixing member 15 may be provided with a screw hole to be insertedwith a screw for fixing to the runway 2, for example. The fixing member15 may have a tapered shape in which the outer surface is inclined so asto be thinner toward the outer periphery, for example. The ceilingmember 11 and the fixing member 15 may be, for example, separate membersor may be integrally molded as an integrally molded product. When theceiling member 11 and the fixing member 15 are separate members, as inthe case of the integrated molding product, the fixing member 15 may be,for example, aluminum castings, titanium castings, aluminum alloycastings, or titanium alloy castings. At least one of the ceiling member11 and the fixing member 15 may have a hole through which therunway-embedded flash lighting device 1 is pulled up by a tool.

The LED flash light source 13 is placed inside the cylindrical body 10in a state of capable of emitting flash toward the light guide member 12placed in the flash emission window. FIG. 3 is a perspective view frombelow showing an example of the cylindrical body 10 and ceiling member11. For example, as shown in FIG. 3, the inner surface of the ceilingmember 11 (the surface on the cylindrical body 10 side) may be providedwith a site to be placed with the LED flash light source 13 below theflash emission window. The light guide member 12 allows flash emittedfrom the LED flash light source 13 to be emitted to the outside from theflash emission window.

The LED flash light source 13 may be, for example, an LED module or thelike. The LED flash light source 13 includes a substrate 13 a and an LED13 b, and the LED 13 b is placed on the substrate 13 a as shown in FIG.1, for example. While the number of the LED flash light sources 13 istwo in the example shown in FIG. 1, the number of LED flash lightsources 13 may be one or three or more.

The conditions for mounting the LED 13 b on the substrate 13 a is notparticularly limited, and can be appropriately set according to thedesired optical properties. FIG. 1 shows an example in which 4×9=36matrixes are two, i.e., seventy-two LEDs 13 b are mounted on thesubstrate 13 a.

The shape of the LED 13 b is not particularly limited, and is generallya square shape or a rectangular shape. The size of the LED 13 b is notparticularly limited, and in the case of a square, the length of oneside is, for example, 1.8 to 2.2 mm, 3 to 3.5 mm, or 4 to 5.3 mm, and inthe case of a rectangle, the length of the short side is, for example,the same as the length of the square, and the ratio of the short side tothe long side is, for example, 1:1 to 3. On the surface of the substrate13 a to which the LEDs 13 b are mounted, the width between the adjacentLEDs is, for example, 0.2 to 0.5 mm.

The LED flash light source 13 may include a lens member 13 c, the lensmember 13 c may be placed above the LED 13 b, and the lens member 13 cmay be a lens member that allows the emission surface of flash emittedfrom the LED 13 b to have a uniform illuminance distribution, forexample, as shown in the partially enlarged perspective view of FIG. 4and the cross-sectional view of FIG. 5. Examples of the lens member 13 cinclude a fly-eye lens and an integrator lens. For example, as shown inFIG. 5, by dividing the lens member 13 c into two or more pieces so asnot to become too large, the burden on the lens member 13 c can befurther reduced and damage can be prevented. It is preferable that thelens member 13 c be not too small so as not to cause loss in extractionof the emitted flash.

The runway-embedded flash lighting device 1 of the present exampleembodiment may further include a heat radiating member 13 d, and theheat radiating member 13 d may be placed on the substrate 13 a of theLED flash light source 13 on the surface opposite to the LED 13 bmounting side, for example, as shown in FIG. 5. While FIG. 5 shows anexample in which the heat radiating member 13 d is a heat radiating fin,it is also possible to radiate heat using a fan or the like that blowsair toward the substrate 13 a.

The bottom cover member 16 is placed in a state of capable of closingthe lower opening of the cylindrical body 10. The bottom cover member 16is provided with, on the outer surface thereof on the side opposite tothe cylindrical body 10, a support portion 17 protruding from the outersurface. Examples of the material of the bottom cover member 16 includealuminum, titanium, aluminum alloy, titanium alloy, and castingsthereof.

The support portion 17 may be any portion as long as it allows therunway-embedded flash lighting device 1 to be placed on the ground withits bottom facing down without requiring a platform or the like, andthere are no particular restrictions on the configurations such as itsshape, size, height, number, and the like. FIG. 1 shows therunway-embedded flash lighting device 1 in which two support portions17, including two strut portions standing from the outer surface and abeam portion passed over the upper ends of the two strut portions, areplaced on the outer surface of the bottom cover member 16 in a state offacing each other. The two supporting portions 17 have the same heightprotruding from the outer surface. For example, in the aspect shown inFIG. 1, the support portion 17 also serves as a handle, and therunway-embedded flash lighting device 1 can be easily carried by a humanhand.

FIG. 6 is a perspective view from below showing the runway-embeddedflash lighting device 1 shown in FIG. 1. For example, as shown in FIG.6, the bottom cover member 16 may include a cable gland 16 a and anexternal ground terminal 16 b. From the viewpoint of preventing thecable gland 16 a and the external ground terminal 16 b from coming intocontact with the ground and being damaged, the height of the supportportion 17 protruding from the outer surface of the bottom cover member16 is preferably equal to or greater than the heights of the cable gland16 a and the external ground terminal 16 b protruding from the outersurface. Further, when the bottom cover member 16 is attached to atleast one of the cylindrical body 10 and the LED flash light source 13with a screw 16 c and an O-ring (not shown), for example, therunway-embedded flash lighting device 1 can be waterproof.

FIGS. 10A and 10B are views showing variations of the support portion17. As shown in FIGS. 10A and 10B, even with three or more supportportions 17 having various shapes such as a cylindrical shape and a Ushape, it is possible to place the runway-embedded flashlight device 1on the ground with its bottom facing down without requiring a platformor the like. When two or more support portions 17 are provided, it ispreferable that the two or more support portions 17 be placed on theouter surface of the bottom cover member 16 in a state of aligning inthe circumferential direction, and it is preferable that the two or moresupport portions 17 be placed at equal spacings in the circumferentialdirection. Although it is not shown, even with one support portion 17having a columnar shape (e.g., circular column, elliptical column,polygonal column, etc.), cylindrical shape (e.g., circular cylinder,elliptical cylinder, polygonal cylinder, etc.), or the like, it ispossible to place the runway-embedded flash lighting device 1 on theground with its bottom facing down without requiring a platform or thelike.

It is preferable that an upward flash having an angle α of about 3degrees with respect to a direction parallel to the runway surface beemitted from the runway-embedded flash lighting device 1 of the presentexample embodiment, for example, as shown in FIG. 8. The light guidemember 12 and the LED flash light source 13 inside the runway-embeddedflash lighting device 1 shown in FIG. 8 can be shown as in FIG. 9.

While the weight of a flash lighting device using a xenon flash lightsource is 65 kg or less, specifically, about 40 kg, the weight of therunway-embedded flash lighting device 1 of the present exampleembodiment is, for example, 18 kg or less, specifically, about 11 kg.Thus, according to the present example embodiment, it is possible toprovide a light runway-embedded flash lighting device.

While the lifetime of a flash lighting device using a xenon flash lightsource is about 500 hours, the runway-embedded flash lighting device 1of the present example embodiment can be used indefinitely, for example.Thus, according to the present example embodiment, it is possible toprovide a runway-embedded flash lighting device having a long life.

While the effective luminous intensity of a flash lighting device usinga xenon flash light source is 1000 cd or more, specifically about 1200cd, the effective luminous intensity of the runway-embedded flashlighting device 1 of the present example embodiment is, for example,6000 cd or more, specifically about 7000 cd. Thus, according to thepresent example embodiment, it is possible to provide a runway-embeddedflash lighting device having a high effective luminous intensity.

While a flash lighting device using a xenon flash light source cannotswitch the luminous intensity among high luminous intensity, mediumluminous intensity, and low luminous intensity, since therunway-embedded flash lighting device 1 of the present exampleembodiment has high effective luminous intensity as described above, itcan switch the luminous intensity among high luminous intensity (e.g.,6000 cd or more), medium luminous intensity (e.g., 1000 cd or more), andlow luminous intensity (e.g., 250 cd or more), for example. Thus,according to the present example embodiment, it is possible to provide arunway-embedded flash lighting device that can switch the luminousintensity. The high luminous intensity is used, for example, in thedaytime of poor visibility due to fog, rain, or the like, the lowluminous intensity is used, for example, in the night, and the mediumluminous intensity is used, for example, in the evening.

While the power dissipation of a flash lighting device using a xenonflash light source is about 500 W, the power dissipation of therunway-embedded flash lighting device 1 of the present exampleembodiment is, for example, about 80 W (up to 114 W at high luminousintensity, 31 W at medium luminous intensity, 24 W at low luminousintensity). Thus, according to the present example embodiment, it ispossible to provide a runway-embedded flash lighting device that is lowin power dissipation.

Second Example Embodiment

FIG. 7 is a schematic perspective view showing the configuration of anexample of the runway of the present example embodiment. While therunway is shown schematically simplified in FIG. 7, the runway 2 is onein which the runway-embedded flash lighting device 1 of the firstexample embodiment is embedded with the ceiling member 11 exposed.

While the present invention has been described above with reference toillustrative example embodiments, the present invention is by no meanslimited thereto. Various changes and variations that may become apparentto those skilled in the art may be made in the configuration andspecifics of the present invention without departing from the scope ofthe present invention.

Supplementary Notes

A part of or the whole of the above-described example embodiments can bedescribed as the following supplementary notes. However, the presentinvention is by no means limited thereto.

(Supplementary Note 1)

A runway-embedded flash lighting device including:

a cylindrical body;

a ceiling member;

a light guide member;

an LED flash light source; and

a bottom cover member, wherein

the cylindrical body can be embedded in a runway,

the ceiling member is placed in an upper opening of the cylindrical bodyin a state of being able to be exposed to a runway surface when thecylindrical body is embedded in the runway,

the ceiling member is provided with a flash emission window,

the light guide member is placed in the flash emission window,

the LED flash light source is placed inside the cylindrical body in astate of capable of emitting flash toward the light guide member placedin the flash emission window,

the light guide member allows flash emitted from the LED flash lightsource to be emitted to an outside from the flash emission window,

the bottom cover member is placed in a state of capable of closing thelower opening of the cylindrical body, and

the bottom cover member is provided with, on an outer surface thereof ona side opposite to the cylindrical body, a support portion protrudingfrom the outer surface.

(Supplementary Note 2)

The runway-embedded flash lighting device according to SupplementaryNote 1, including:

two or more support portions, and

the two or more supporting portions have the same height protruding fromthe outer surface.

(Supplementary Note 3)

The runway-embedded flash lighting device according to SupplementaryNote 2, wherein

the two support portions are placed on the outer surface of the bottomcover member in a state of facing each other.

(Supplementary Note 4)

The runway-embedded flash lighting device according to SupplementaryNote 2 or 3, wherein

the two or more support portions are placed on the outer surface of thebottom cover member in a state of aligning in a circumferentialdirection.

(Supplementary Note 5)

The runway-embedded flash lighting device according to SupplementaryNote 4, wherein

the two or more support portions are placed at equal spacings in thecircumferential direction.

(Supplementary Note 6)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 5, wherein

the support portion includes two strut portions standing from the outersurface and a beam portion passed over the upper ends of the two strutportions.

(Supplementary Note 7)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 6, wherein

the bottom cover member includes a cable gland and an external groundterminal,

the cable gland and the external ground terminal are protruded from theouter surface of the bottom cover member, and

a height of the support portion protruding from the outer surface isequal to or greater than heights of the cable gland and the externalground terminal protruding from the outer surface.

(Supplementary Note 8)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 7, wherein

the LED flash light source includes:

-   -   a substrate;    -   an LED; and    -   a lens member,

the LED is placed on the substrate,

the lens member is placed above the LED, and

the lens member is a lens member that allows an emission surface offlash emitted from the LED to have a uniform illuminance distribution.

(Supplementary Note 9)

The runway-embedded flash lighting device according to SupplementaryNote 8, further including:

a heat radiating member, wherein

the heat radiating member is placed on the substrate of the LED flashlight source on a surface opposite to an LED mounting side.

(Supplementary Note 10)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 9, wherein

the ceiling member includes an upper ceiling portion and a lower ceilingportion,

the upper ceiling portion is placed on a rear side relative to anemission direction of the flash emission window, and

the lower ceiling portion is placed on an emission direction side of theflash emission window.

(Supplementary Note 11)

The runway-embedded flash lighting device according to SupplementaryNote 10, further including:

a reinforcing plate member, wherein

the reinforcing plate member is placed on an outer surface of the lowerceiling portion in a state of standing upright in a vertical directionof the outer surface of the lower ceiling portion.

(Supplementary Note 12)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 11, wherein

the cylindrical body and the ceiling member are integrally molded as anintegrally molded product.

(Supplementary Note 13)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 12, including:

two or more flash emission windows, wherein

the light guide member is placed in each of the flash emission windows.

(Supplementary Note 14)

The runway-embedded flash lighting device according to any one ofSupplementary Notes 1 to 13, further including:

a fixing member, wherein

the fixing member is placed on an outer peripheral portion of theceiling member, and

the fixing member is provided with a screw hole to be inserted with ascrew for fixing to the runway.

(Supplementary Note 15)

The runway-embedded flash lighting device according Supplementary Note14, wherein

the ceiling member and the fixing member are integrally molded as anintegrally molded product.

(Supplementary Note 16)

A runway with the runway-embedded flash lighting device according to anyone of Supplementary Notes 1 to 15.

This application claims priority from Japanese Patent Application No.2018-201402 filed on Oct. 26, 2018. The entire subject matter of theJapanese Patent Application is incorporated herein by reference.

INDUSTRIAL APPLICABILITY

The present invention can provide a new runway-embedded flash lightingdevice that is light, has a long life, has high effective luminousintensity, can switch the luminous intensity, is low in powerdissipation, and can be placed on the ground with its bottom facing downwithout requiring a platform or the like.

REFERENCE SIGNS LIST

-   1: runway-embedded flash lighting device-   2: runway-   10: cylindrical body-   11: ceiling member-   11 a: upper ceiling portion-   11 b: lower ceiling portion-   12: light guide member-   13: LED flash light source-   13 a: substrate-   13 b: LED-   13 c: lens member-   13 d: heat radiating member-   14: reinforcing plate member-   15: fixing member-   16: bottom cover member-   16 a: cable gland-   16 b: external ground terminal-   16 c: screw-   17: support portion

The invention claimed is:
 1. A runway-embedded flash lighting devicecomprising: a body; a ceiling member; a light guide member; an LED flashlight source; and a bottom cover member, wherein the body is configuredto be embedded in a runway, the ceiling member is disposed in an upperopening of the body and configured to be exposed to a runway surfacewhen the body is embedded in the runway, the ceiling member comprises aflash emission window, the light guide member is disposed in the flashemission window, the LED flash light source is disposed inside the bodyand configured to emit a flash toward the light guide member, the lightguide member is configured to allow the flash emitted from the LED flashlight source to be emitted from the flash emission window to outside therunway-embedded flash lighting device, the bottom cover member isdisposed on and covers the lower opening of the body, and the bottomcover member comprises, on an outer surface thereof on a side oppositeto the body, a support portion protruding from the outer surface of thebottom cover member, wherein the support portion comprises two strutportions extending from the outer surface of the bottom cover member anda beam portion passing over upper ends of the two strut portions.
 2. Therunway-embedded flash lighting device according to claim 1, wherein thesupport portion comprises: two or more support portion members, and thetwo or more supporting portion members have the same height protrudingfrom the outer surface of the bottom cover member.
 3. Therunway-embedded flash lighting device according to claim 2, wherein thetwo support portion members are disposed on the outer surface of thebottom cover member and face each other.
 4. The runway-embedded flashlighting device according to claim 2, wherein the two or more supportportion members are placed on the outer surface of the bottom covermember and align in a circumferential direction.
 5. The runway-embeddedflash lighting device according to claim 4, wherein the two or moresupport portion members are equally spaced in the circumferentialdirection.
 6. The runway-embedded flash lighting device according toclaim 1, wherein the LED flash light source comprises: a substrate; anLED; and a lens member, the LED is disposed on the substrate, the lensmember is disposed above the LED, and the lens member is configured toallow an emission surface of a flash emitted from the LED to have auniform illuminance distribution.
 7. The runway-embedded flash lightingdevice according to claim 6, further comprising: a heat radiatingmember, wherein the heat radiating member is placed on the substrate ofthe LED flash light source on a surface opposite to an LED mountingside.
 8. The runway-embedded flash lighting device according to claim 1,wherein the ceiling member comprises an upper ceiling portion and alower ceiling portion, the upper ceiling portion is disposed on a rearside relative to an emission direction of the flash emission window, andthe lower ceiling portion is disposed on an emission direction side ofthe flash emission window.
 9. The runway-embedded flash lighting deviceaccording to claim 1, wherein the body is cylindrical in shape.
 10. Arunway-embedded flash lighting device comprising: a body; a ceilingmember; a light guide member; an LED flash light source; and a bottomcover member, wherein the body is configured to be embedded in a runway,the ceiling member is disposed in an upper opening of the body andconfigured to be exposed to a runway surface when the body is embeddedin the runway, the ceiling member comprises a flash emission window, thelight guide member is disposed in the flash emission window, the LEDflash light source is disposed inside the body and configured to emit aflash toward the light guide member, the light guide member isconfigured to allow the flash emitted from the LED flash light source tobe emitted from the flash emission window to outside the runway-embeddedflash lighting device, the bottom cover member is disposed on and coversthe lower opening of the body, and the bottom cover member comprises, onan outer surface thereof on a side opposite to the body, a supportportion protruding from the outer surface of the bottom cover member,wherein the bottom cover member comprises a cable gland and an externalground terminal, the cable gland and the external ground terminalprotrude from the outer surface of the bottom cover member, and a heightof the support portion protruding from the outer surface of the bottomcover member is equal to or greater than a height of the cable gland anda height of the external ground terminal protruding from the outersurface.
 11. The runway-embedded flash lighting device according toclaim 10, wherein the support portion comprises: two or more supportportion members, and the two or more supporting portion members have thesame height protruding from the outer surface of the bottom covermember.
 12. The runway-embedded flash lighting device according to claim11, wherein the two support portion members are disposed on the outersurface of the bottom cover member and face each other.
 13. Therunway-embedded flash lighting device according to claim 11, wherein thetwo or more support portion members are placed on the outer surface ofthe bottom cover member and align in a circumferential direction. 14.The runway-embedded flash lighting device according to claim 13, whereinthe two or more support portion members are equally spaced in thecircumferential direction.
 15. The runway-embedded flash lighting deviceaccording to claim 10, wherein the LED flash light source comprises: asubstrate; an LED; and a lens member, the LED is disposed on thesubstrate, the lens member is disposed above the LED, and the lensmember is configured to allow an emission surface of a flash emittedfrom the LED to have a uniform illuminance distribution.
 16. Therunway-embedded flash lighting device according to claim 15, furthercomprising: a heat radiating member, wherein the heat radiating memberis placed on the substrate of the LED flash light source on a surfaceopposite to an LED mounting side.
 17. The runway-embedded flash lightingdevice according to claim 10, wherein the ceiling member comprises anupper ceiling portion and a lower ceiling portion, the upper ceilingportion is disposed on a rear side relative to an emission direction ofthe flash emission window, and the lower ceiling portion is disposed onan emission direction side of the flash emission window.
 18. Therunway-embedded flash lighting device according to claim 10, wherein thebody is cylindrical in shape.